AirHint found the following cheapest return flights from Frankfurt (FRA) to Keflavik (KEF) in March 2026 (see full year).

Return flights

09 Mar - 19 Mar	Ryanair
10 Mar - 19 Mar	Ryanair
13 Mar - 19 Mar	Ryanair
21 Mar - 01 Apr	Ryanair
10 Mar - 20 Mar	Ryanair
09 Mar - 16 Mar	Ryanair
10 Mar - 21 Mar	Ryanair
05 Mar - 16 Mar	Ryanair
01 Mar - 26 Mar	Ryanair
13 Mar - 15 Mar	Ryanair
06 Mar - 21 Mar	Ryanair
30 Mar - 01 Apr	Ryanair
27 Mar - 03 Apr	Ryanair
23 Mar - 03 Apr	easyJet
30 Mar - 10 Apr	Ryanair
28 Mar - 03 Apr	Ryanair
27 Mar - 10 Apr	Ryanair
25 Mar - 01 Apr	Air France
26 Mar - 03 Apr	Lufthansa
30 Mar - 12 Apr	Ryanair

Also check the deals for one-way flights from Frankfurt to Keflavik in March.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Frankfurt to Keflavik in March from $195

Return flights